Are there nonstop flights from London (STN) to Havana (HAV)?

No. The fastest connection is via Madrid, about 11h 19m of total flying time.

What is the fastest connection from London (STN) to Havana (HAV)?

via Madrid ≈ 11h 19m, via Milan ≈ 11h 51m, via Rome ≈ 12h 56m (estimated flying time, excluding layovers).

London Stansted Airport (STN) to José Martí International Airport (HAV)・7,524 km

No nonstop flights. The fastest connection is via Madrid (MAD), about 11h 19m of flying time (layover not included).

None.

3 one-stop options, sorted by estimated flying time. Tap one to see the airlines on each leg and booking links.

Times are estimated from distance. Check schedules, frequency and availability with the airline or a booking site.